well first off, the yellowier the piss the worse it is. The more toxicines it has in it. and secondly, the piss method is bad for the plant. Passing on your toxicines, (that your body has gotten rid off to something you're trying to grow and flourish, doesn't make much sense to me) I'm not just speaking outta my ass here, I've tried it and was very disappointed. Burn't plants and a horrible odor.